What was found
LOST #4 HYDRAULIC SYS ENROUTE TO JFK. EMERGENCY WAS DECLARED. REMOVED & REPLACED #4 ENGINE DRIVEN PUMP IAW AMM- 29-11-05. LEAK & OPS CHECK GOOD.
- Difficulty date
- October 10, 2025
- Submitted
- October 10, 2025
- Operation
- Air carrier
- Aircraft
- N412MC
- Make and model
- Boeing 74747UF
- Aircraft serial
- 30559
- Aircraft time
- 102,250 hours, 102,250 cycles
- System (JASC)
- 2913 · Hydraulic Pump (Electric/Engine), Main
- Part
- Pump
- Part number
- 3508806
- Part serial
- MX527286
- Condition
- Failed
- Location
- Hyd System
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- B, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.